Concept
sea_surface_wind_wave_directional_spread
| URI | http://vocab.nerc.ac.uk/collection/P07/current/PRXS8T3Y/ | ||
|---|---|---|---|
| Within Vocab | Climate and Forecast Standard Names | ||
| Alternative Labels | |||
| Definition | The quantity with standard name sea_surface_wind_wave_directional_spread is the directional width of the wind wave component of a sea. Wind waves are waves on the ocean surface and are the high frequency portion of a bimodal wave frequency spectrum. Directional spread is the (one-sided) directional width within a given sub-domain of the wave directional spectrum, S(t,x,y,f,theta) where t is time, x and y are horizontal coordinates (such as longitude and latitude), f is frequency and theta is direction. For a given mean wave (beam) direction the quantity approximates half the root mean square width about the beam axis, as derived either directly from circular moments or via the Fourier components of the wave directional spectrum. | ||
| Date | 2018-08-06T12:15:46 | ||
| Identifier | SDN:P07::PRXS8T3Y | ||
| Note | accepted | ||
| Has Current Version | 1 | ||
| version | 1 | ||
| Same As | MMI | http://mmisw.org/ont/cf/parameter/sea_surface_wind_wave_directional_spread | Mapping: 330289 |
| CF | http://vocab.nerc.ac.uk/standard_name/sea_surface_wind_wave_directional_spread/ | Mapping: 369657 | |
| Related | P06:UAAA |
Degrees | Mapping: 1530331 |
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